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This document applies to transportable masonry and stone cutting-off machines stationary during work, principally used on job site building construction for cutting-off stones, other mineral construction materials and composite materials having at least one supporting surface. The power for the tool rotation is supplied by electrical or internal combustion prime motor. This document deals with all significant hazards, hazardous situations or hazardous events relevant to masonry and stone cutting-off machines for job site (see Annex A), when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. This document specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards during the lifetime of the machinery as described in EN ISO 12100:2010, 5.4. These machines are designed for use with rotating diamond cutting-off wheels with a continuous rim and/or segmented rim. This document does not apply to: - metal cutting-off machines; - wood and timber sawing machines; - machines with a feed or descent mechanism other than manual, or with a pedal; - mobile machines on a trolley travelling on the ground; - hand-held portable grinding and cutting-off machines; - hand-held portable grinding and cutting-off machines mounted on a support to be used in a fixed position. This document does not cover the operation of transportable masonry and stone cutting-off machines in potential explosive atmospheres. In this document, the masonry and stone cutting-off machines for job site construction are called: “cutting-off machines” or “machines”, and cutting-off wheels are also called: “tools”. This document applies to machines which are manufactured after the date of approval of the standard by CEN.